A person who desires to transport through an Authority property tunnel a material prohibited by these regulations may apply for an exemption permit. Permits may be granted in the discretion of the Maryland Transportation Authority subject to the following conditions: The entity requesting the exemption permit submits written evidence that the proposed cargo poses a minimal risk to the travelling public, Maryland Transportation Authority employees, and the Authority property; The permit shall be for a specific duration as established by the Maryland Transportation Authority; The permit is revocable whenever the Maryland Transportation Authority believes it is necessary to safeguard its employees, the travelling public, or the Authority property; and The person receiving the permit shall abide by these regulations. The Maryland Transportation Authority's decision issuing or denying a permit is final.